As of 18:32 PDT

Weather in Duwamish, WA

83°Current weather

Duwamish, Saturday, 8 August, 18:32

Clear. Feels like 82°. High 84°, low 58°.

Pressure30.00 inHg
Wind3 mph N
Humidity42%
Visibility6.2 mi
Dew point57°

Monthly outlook for Duwamish, WA: average high 84.5°, average low 58.5°. That is 4.5° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 16 August (92.4°), the coolest 10 August (53.6°).

84.5°/58.5°
Average high / low
+4.5°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 August – 17 August85.5°77.3°+4.6°
18 August – 27 August82.7°74.8°+4.4°
28 August – 6 Septemberat normal72.9°

August records over 66 years

98.1°9 August 1981All-time high
44.2°30 August 1965All-time low

Climate normals and records are computed from the nearest reference point — Renton (5 mi).

Sun, 0977° / 54°0Overcast
77 °Overcast

Duwamish, Sunday, 9 August

Overcast. High 77°, low 54°.

Pressure30.03 inHg
Wind3.1 mph SW
Humidity37%
Visibility6.2 mi
Dew point49°
Mon, 1084° / 54°0Partly cloudy
84 °Partly cloudy

Duwamish, Monday, 10 August

Partly cloudy. High 84°, low 54°.

Pressure30.09 inHg
Wind3.7 mph SW
Humidity42%
Visibility6.2 mi
Dew point50°
Tue, 1185° / 57°0Clear
85 °Clear

Duwamish, Tuesday, 11 August

Clear. High 85°, low 57°.

Pressure30.09 inHg
Wind1.3 mph N
Humidity36%
Visibility6.2 mi
Dew point50°
Wed, 1282° / 59°0Clear
82 °Clear

Duwamish, Wednesday, 12 August

Clear. High 82°, low 59°.

Pressure30.00 inHg
Wind5.4 mph SW
Humidity44%
Visibility6.2 mi
Dew point52°
Thu, 1382° / 57°0Clear
82 °Clear

Duwamish, Thursday, 13 August

Clear. High 82°, low 57°.

Pressure29.94 inHg
Wind9.6 mph N
Humidity31%
Visibility
Dew point46°
Fri, 1486° / 60°0Clear
86 °Clear

Duwamish, Friday, 14 August

Clear. High 86°, low 60°.

Pressure29.94 inHg
Wind7.5 mph N
Humidity31%
Visibility
Dew point49°
Sat, 1592° / 62°0Mostly clear
92 °Mostly clear

Duwamish, Saturday, 15 August

Mostly clear. High 92°, low 62°.

Pressure29.97 inHg
Wind9.2 mph N
Humidity20%
Visibility
Dew point42°
Sun, 1692° / 62°0Mostly clear
92 °Mostly clear

Duwamish, Sunday, 16 August

Mostly clear. High 92°, low 62°.

Pressure29.97 inHg
Wind6.8 mph NW
Humidity21%
Visibility
Dew point43°
Mon, 1790° / 62°0Clear
90 °Clear

Duwamish, Monday, 17 August

Clear. High 90°, low 62°.

Pressure29.97 inHg
Wind9.8 mph N
Humidity23%
Visibility
Dew point45°
Tue, 1887° / 61°0Overcast
87 °Overcast

Duwamish, Tuesday, 18 August

Overcast. High 87°, low 61°.

Pressure30.00 inHg
Wind5.4 mph N
Humidity26%
Visibility
Dew point45°
Wed, 1981° / 59°0Overcast
81 °Overcast

Duwamish, Wednesday, 19 August

Overcast. High 81°, low 59°.

Pressure30.06 inHg
Wind7.5 mph N
Humidity33%
Visibility
Dew point47°
Thu, 2082° / 59°0Clear
82 °Clear

Duwamish, Thursday, 20 August

Clear. High 82°, low 59°.

Pressure30.03 inHg
Wind10.6 mph N
Humidity36%
Visibility
Dew point50°
Fri, 2181° / 58°0Clear
81 °Clear

Duwamish, Friday, 21 August

Clear. High 81°, low 58°.

Pressure30.00 inHg
Wind8.1 mph N
Humidity35%
Visibility
Dew point49°
Sat, 2287° / 58°0Overcast
87 °Overcast

Duwamish, Saturday, 22 August

Overcast. High 87°, low 58°.

Pressure29.94 inHg
Wind7.7 mph N
Humidity31%
Visibility
Dew point47°
Sun, 2377° / 57°0Overcast
77 °Overcast

Duwamish, Sunday, 23 August

Overcast. High 77°, low 57°.

Pressure30.03 inHg
Wind7.4 mph N
Humidity49%
Visibility
Dew point50°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2474° / 56°0.07Climate normal
74 °Climate normal

Duwamish, Monday, 24 August

Climate normal for this date — 60-year average.

Average high74°
Average low56°
Average precipitation0.07 in
Chance of precipitation20%
Record high88° (1985)
Record low49° (2021)
Tue, 2575° / 55°0.07Climate normal
75 °Climate normal

Duwamish, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high75°
Average low55°
Average precipitation0.07 in
Chance of precipitation18%
Record high87° (2022)
Record low46° (1995)
Wed, 2675° / 55°0.05Climate normal
75 °Climate normal

Duwamish, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high75°
Average low55°
Average precipitation0.05 in
Chance of precipitation22%
Record high90° (1986)
Record low48° (1993)
Thu, 2775° / 56°0.09Climate normal
75 °Climate normal

Duwamish, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high75°
Average low56°
Average precipitation0.09 in
Chance of precipitation27%
Record high92° (1986)
Record low49° (1962)
Fri, 2875° / 56°0.04Climate normal
75 °Climate normal

Duwamish, Friday, 28 August

Climate normal for this date — 60-year average.

Average high75°
Average low56°
Average precipitation0.04 in
Chance of precipitation18%
Record high92° (1967)
Record low47° (2000)
Sat, 2974° / 56°0.11Climate normal
74 °Climate normal

Duwamish, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high74°
Average low56°
Average precipitation0.11 in
Chance of precipitation25%
Record high87° (1996)
Record low46° (1980)
Sun, 3073° / 56°0.07Climate normal
73 °Climate normal

Duwamish, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high73°
Average low56°
Average precipitation0.07 in
Chance of precipitation33%
Record high87° (1967)
Record low44° (1965)
Mon, 3172° / 56°0.07Climate normal
72 °Climate normal

Duwamish, Monday, 31 August

Climate normal for this date — 60-year average.

Average high72°
Average low56°
Average precipitation0.07 in
Chance of precipitation32%
Record high92° (1987)
Record low47° (1964)
Tue, 0173° / 55°0.08Climate normal
73 °Climate normal

Duwamish, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high73°
Average low55°
Average precipitation0.08 in
Chance of precipitation27%
Record high89° (1987)
Record low44° (1973)
Wed, 0273° / 55°0.08Climate normal
73 °Climate normal

Duwamish, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high73°
Average low55°
Average precipitation0.08 in
Chance of precipitation30%
Record high95° (1988)
Record low45° (1960)
Thu, 0373° / 55°0.08Climate normal
73 °Climate normal

Duwamish, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high73°
Average low55°
Average precipitation0.08 in
Chance of precipitation25%
Record high93° (1988)
Record low44° (1975)
Fri, 0473° / 55°0.06Climate normal
73 °Climate normal

Duwamish, Friday, 4 September

Climate normal for this date — 60-year average.

Average high73°
Average low55°
Average precipitation0.06 in
Chance of precipitation22%
Record high87° (2003)
Record low46° (1965)
Sat, 0572° / 55°0.08Climate normal
72 °Climate normal

Duwamish, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high72°
Average low55°
Average precipitation0.08 in
Chance of precipitation32%
Record high92° (2017)
Record low46° (2000)
Sun, 0672° / 54°0.11Climate normal
72 °Climate normal

Duwamish, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high72°
Average low54°
Average precipitation0.11 in
Chance of precipitation28%
Record high88° (2017)
Record low45° (1960)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Duwamish, WA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Duwamish, WA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.